// 节流
function throttle(func,delay) {
  var canUse=true;
  return function() {
    if(canUse){
      func.apply(this,arguments)
      canUse=false
      setTimeout(function() {
        canUse=true
      },delay)
    }
  }
}

$(".resume-input input").keyup(throttle(changeInput,20000))
function changeInput() {
  console.log('keyup')
}
